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Scientometrics
Authors: Jian Wang, Kaspars Berzins, Diana Hicks, Julia Melkers, Fang Xiao, and Diogo Pinheiro

problem, such as probabilistic latent semantic analysis (Hofmann 1999 ; Song et al. 2007 ) and latent Dirichlet allocation (Bhattacharya and Getoor 2006 , 2007 ; Blei et al. 2003 ; Song et al. 2007 ). Another challenge confronting clustering

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. Landauer , T , Foltz , P , Laham , D 1998 Introduction to latent semantic analysis . Discourse Processes 25 : 259 – 284 10.1080/01638539809545028 . Lanjouw , J , Schankerman , M 2001

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